Thinkpad L512 internal display not working

[Guy Willett]

Hello,


I have a Lenovo Thinkpad L512 where the integrated webcam had a fault that was causing a BSOD. Neither updating the driver or disabling the camera helped so I decided to disconnect the camera. As I was doing that the internal display fell forwards and the cable was pulled out the back of the screen. I reconnected it but the internal display would then not work. So far I have tried the following:


- replaced the screen cable (as I thought the connector must have been damaged when it was pulled out)

- replaced the screen (same reason as above)

- reset the BIOS to defaults including making sure that Thinkpad LCD is set as the boot display

- updated the BIOS

- updated the video driver

- confirmed that the lid close switch is working (the laptop goes into sleep mode when the lid is closed)

- Fn + F7 seems to work in terms of switching the video output but nothing displays on internal screen

- internal screen is off completely, not just very dim


Any ideas about what the problem might be and what else I can try?


Thanks in advance


Guy